ceph/src/boost/boost/iostreams/device/back_inserter.hpp

   1 // (C) Copyright 2008 CodeRage, LLC (turkanis at coderage dot com)
   2 // (C) Copyright 2003-2007 Jonathan Turkanis
   3 // Distributed under the Boost Software License, Version 1.0. (See accompanying
   4 // file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt.)
   5
   6 // See http://www.boost.org/libs/iostreams for documentation.
   7
   8 #ifndef BOOST_IOSTREAMS_BACK_INSERTER_HPP_INCLUDED
   9 #define BOOST_IOSTREAMS_BACK_INSERTER_HPP_INCLUDED
  10
  11 #if defined(_MSC_VER)
  12 # pragma once
  13 #endif
  14
  15 #include <boost/iostreams/detail/ios.hpp> // streamsize.
  16 #include <boost/iostreams/categories.hpp>
  17
  18 namespace boost { namespace iostreams {
  19
  20 template<typename Container>
  21 class back_insert_device {
  22 public:
  23     typedef typename Container::value_type  char_type;
  24     typedef sink_tag                        category;
  25     back_insert_device(Container& cnt) : container(&cnt) { }
  26     std::streamsize write(const char_type* s, std::streamsize n)
  27     {
  28         container->insert(container->end(), s, s + n);
  29         return n;
  30     }
  31 protected:
  32     Container* container;
  33 };
  34
  35 template<typename Container>
  36 back_insert_device<Container> back_inserter(Container& cnt)
  37 { return back_insert_device<Container>(cnt); }
  38
  39 } } // End namespaces iostreams, boost.
  40
  41 #endif // #ifndef BOOST_IOSTREAMS_BACK_INSERTER_HPP_INCLUDED